CVE-2021-4126

Name
CVE-2021-4126
Description
When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message layer, for example a message footer added by a mailing list gateway, Thunderbird only considered the inner signed message for the signature validity. This gave the false impression that the additional contents were also covered by the digital signature. Starting with Thunderbird version 91.4.1, only the signature that belongs to the top level MIME part will be considered for the displayed status. This vulnerability affects Thunderbird < 91.4.1.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://www.mozilla.org/security/advisories/mfsa2021-55/
MISC https://bugzilla.mozilla.org/show_bug.cgi?id=1732310

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* thunderbird >= None < 91.4.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
thunderbird edge-community 91.4.1-r0 None fixed
thunderbird edge-community 91.4.0-r0 None possibly vulnerable
thunderbird edge-community 91.3.2-r0 None possibly vulnerable
thunderbird edge-community 78.9.0-r0 None possibly vulnerable
thunderbird edge-community 78.7.0-r0 None possibly vulnerable
thunderbird edge-community 78.6.1-r0 None possibly vulnerable
thunderbird edge-community 78.5.1-r0 None possibly vulnerable
thunderbird edge-community 68.10.0-r0 None possibly vulnerable
thunderbird edge-community 68.9.0-r0 None possibly vulnerable
thunderbird edge-community 68.8.0-r0 None possibly vulnerable
thunderbird edge-community 68.7.0-r0 None possibly vulnerable
thunderbird edge-community 68.6.0-r0 None possibly vulnerable
thunderbird edge-community 68.5.0-r0 None possibly vulnerable
thunderbird 3.22-community 91.4.1-r0 None fixed
thunderbird 3.22-community 91.4.0-r0 None possibly vulnerable
thunderbird 3.22-community 91.3.2-r0 None possibly vulnerable
thunderbird 3.22-community 78.9.0-r0 None possibly vulnerable
thunderbird 3.22-community 78.7.0-r0 None possibly vulnerable
thunderbird 3.22-community 78.6.1-r0 None possibly vulnerable
thunderbird 3.22-community 78.5.1-r0 None possibly vulnerable
thunderbird 3.22-community 68.10.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.9.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.8.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.7.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.6.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.5.0-r0 None possibly vulnerable
thunderbird 3.21-community 91.4.1-r0 None fixed
thunderbird 3.20-community 91.4.1-r0 None fixed
thunderbird 3.19-community 91.4.1-r0 None fixed
thunderbird 3.18-community 91.4.1-r0 None fixed
thunderbird 3.17-community 91.4.1-r0 None fixed